chain rule?

**cwarzecha** · October 12th 2008, 12:12 PM

Find the derivative of
f(x)=e^4x(x^2+3x)

**skeeter** · October 12th 2008, 12:33 PM

$f(x) = e^{4x}(x^2 + 3x)$

$f'(x) = e^{4x}(2x + 3) + 4e^{4x}(x^2 + 3x)$

$f'(x) = e^{4x}[(2x+3) + 4(x^2 + 3x)]$

I'll leave you to clean up the algebra from here.

**cwarzecha** · October 12th 2008, 01:04 PM

whoa. how did you do that?

**skeeter** · October 12th 2008, 02:15 PM

product rule + chain rule with the exponential function

**cwarzecha** · October 12th 2008, 02:24 PM

oh ok. thanks!

Thread: chain rule?

LinkBack

Thread Tools

Display

chain rule?

Similar Math Help Forum Discussions

Finding dy/dx of equation using both chain rule and product rule

Chain Rule Inside of Chain Rule

Help with a question involving chain rule + product rule (derivative)

Intergration help, reverse chain rule, product rule

Chain rule or Power rule or both? Trig derivative

Search Tags